258 MONILEA-PRIOTROCHUS. 



the densely obliquely striate interstices; aperture oblique, about 

 half the length of shell, ovate; outer lip bevelled to an edge; 

 throat spirally lirate ; edge of columella denticulate, its upper 

 insertion callous, partly or nearly covering the umbilicus. 

 Alt. 23, diam. 18 mill. 



Red Sea to Natal 



T. obscurus WOOD, Index Testaceologicus, suppl. t. 5, f. 26. 

 PHILIPPI, Abbild. ii, Trochus t. 6, f. 3 ; Couchyl. Cab., p. 200, 

 t. 30, f. 3. FISCHER, Coq. Viv., p. 208, t. 69, f. 2. KKAUSS, 1 )ii> 

 Siidafric. Moll., p. 98. MARTENS, Mobius' Reise n. Mauritius, p. 

 296. T. signatus JONAS, Zeitschr. f. Mai. 1848, p. 171. T. lineo- 

 lata BIANCONI, Mem. della Accad. Sci. della Institute di Bologna, 

 ser. 2, iv, p. 524, t. 1 (1864). 



Young specimens are subbiangulate with nodulose periphery. 



M. CHRYSOI^EMA von Martens. PL 39, fig. 27. 



Shell conoid-ovate, perforate, sculptured with about 8 spiral lirse 

 above the suture, 11 below; grayish-white; whorls 5, convex, 

 separated by rather deep sutures ; last whorl rounded, base con- 

 vex ; aperture ovate-circular, moderately oblique, small ; outer 

 margin slightly thickened within, simple ; columellar margin cal- 

 lously thickened, obtusely denticulate; throat golden, spirally striate. 



Alt. 71, diam. 62 mill.; aperture alt. 4, width 3i mill. (Von- 

 Martens^) 



Black River, Mauritius. 



Tr. (Aphanotrochus) chrysolcemus MART., Reise nach Mauritius, 

 p. 296. 



M; GOUDOTI Fischer. PL 61, fig. 36. 



Shell small, imperforate, thick, conoid-elongated ; whorls 6 to 7, 

 convex, whitish-ashen, punctate with rose-color, maculate with 

 spadiceous ; spirally cingulate, the penultimate whorls with 8 

 cinguli ; last whorl elongated, rounded in the middle, appressed 

 below the suture, convex beneath ; aperture ovate-subquadrate ; lip 

 crenulated ; columella arcuate, delicately crenulated. 



Alt. 9, diam. 6 mill. (Fischer.*) 



Id. of St. Marie, near Madagascar. 



T. goudoti FISCHER, Journ. de Conchyl. 1878, p. 62; Coq. Viv., 

 p. 371, t. 113, f. 3. 



